Cushion-spring connection



1927. March 22 v. MASSACESE CUSHION SPRING CONNECTION Filed April 20, 1926 INVENTOR VIMassacese.

WITNESSES 74 JTW ATTORNEYS Fatented nae.

. VINGENZQ MASMtGESE, 033'? NEW YQRK, N.

C llSTiiKtlhT-SPBKNG CONNECTION.

Application tiled April as, 1926. Serial No. .ltlSfifiS.

'llhis invention relates to cushion spring structures, and has particular reference to an improvement in the means for connecting the spring units to the frame.

As an object the invention contemplates an improved means of connecting the spring units of a cushion spring to the frame, which insures a rigid and positive connection and precludes any possibility of. accidental disconnection.

The invention further comprehends a connection of the character set forth which is extremely simple, economical, and highly effective;

With the above recited and other objects in view, reference is had to the following specification and accompanying drawings in which there is exhibited one example or embodiment of the invention which is in no way intended as a limitation upon the scope of the appended claims as it is to be clearly understood that variations and modifications which properly fall within the scope of said claims may be resorted to when found orpedient.

in the drawings- Figure l is a fragmentary plan view of a framed cushion spring illustrating the spring units joined to the frame by a connection made in accordance with the invention;

Fig. 2 is a fragmentary plan view illustrating the relative position of the parts in the initial step of attaching the spring;

Fig. 3 is a sectional View therethrough taken approximately on the line 3-3 of Fig. 2 and illustrating the connecting loop partially bent around the frame;

Fig. 4 is a plan view illustrating the connecting loop bent downwardly over the frame;

Fig. 5 is a sectional view talren approximately on the line 5-5 of Fig. l;

Fig. 6 illustrates the connecting loop wrapped about the frame;

"Fig. 7 is a sectional view thereof taken on the line 77 of Fig. 6;

Fig. 8 illustrates the final position of the connecting loop with its terminal wrapped about the spring convolution and with the bight engaging the frame;

Fig. 9 is a sectional view taken on the line 9-9 of Fig. 8..

Referring to the drawings by characters of reference 10 designates the frame of a cushion spring structure and 11 the spring units .which are connected to each other by the connections 12 in the usual well-known manner. The present invention appertains to the means for connecting the outermost or marginal spring units to the frame, and said means consists of a length or lengths of material 13, such as wire, which are bent and formed to provide portions 14 wrapped respectively about portions of the frame and portions of the convolutions of the spring units. The portions ll are in the nature of U-shaped offsets which are spaced coincident with the spacing of the spring units'll and which include side arms 15 joined by a bight 16. The ends or terminals of the length of material or wire 13 are provided with loops 1? which are wrapped about end convolutions of the spring units. The portions or oilsets 14 are initially threaded oyer the spring unit end convolutions as illustrated in Fig. 2 and under the frame 10 and are thence bent upwardly as in 8 and downwardly to wrap the armsaround the frame as illus trated in Figs. 4 and 5. The side arms of the $9 loops 14 converge toward each other from their juncture with the main portion of the wine or length of material 13 to the bight 16 so that the portions thereof toward the outer end or bight when wrapped around the frame may be then bent downwardly as in Figs. 6 and 7, to lie hetween the wider portions. Theremaining ends of the arms are thence bent inwardly and upwardly over the spring convolutions until the bight 16 is brought into contact with the frame 10 as illustrated in Figs. 8 and 9, which illustrates the finished joint. By looping, bending and forming the length of material or wire as illustrated, it is obvious that an extremely strong, rigid and durable connection between the spring units and frame is established which positively/ precludes accidental disco'n nect-ion and insures a rigid structure due to the fact that the material or wire 13 is of a sufiicient gage to resist straining of the wrapped portions by a pull exerted in a direction to effect relative separation of the spring units and frame. it is apparent, however, that when a disconnection is desired, a reversal of the steps employed in establishin the connection may be easily accomplished by individually unwrapping the wrapped portions.

From the foregoing it will be seen that a connection between the spring elements of a cushion spring and its frame has been detill vised which is economical yet strong, durable and eflicient.

What is claimed is: In a spring structure, a, frame, springs, and 5 a length of wire provided with U-shaped 01?- set loops havingconverging members, each loop hemg bent under and over the end convolution of a spring, under and over the frame and then under and over the said convolution of a spring with its end extending be 10 tween the members of the loop towards the frame, whereby the frame and the spring are held in separate encircling portions and thereby a rigid connection between the spring and frame obtained.

VINCENZO MASSACESE 

